P01CB

Cylinder 1 Injection Timing Performance - Over Retarded

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Rough engine operation
Misfire in cylinder 1
Smoky exhaust

Causes

Malfunction of the fuel injector of cylinder 1
Low pressure in the fuel system
Problems with the high pressure fuel pump
Malfunction of sensors (mass air flow sensor, camshaft position sensor)
Fuel system contamination
ECU software error

How to Fix

Fuel system diagnostics using a scanner
Checking the fuel rail pressure
Testing the injectors of cylinder 1
Diagnostics of the high pressure fuel pump
Checking the condition of sensors (mass air flow sensor, camshaft position)
Clean or replace fuel injectors as necessary
Reset error and test drive

Related codes

P01CA P01CC P0201 P0301